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Scientific American, Vol. 39, No. 7 (1878) (1878)

leaf 3

An illustration from Scientific American, Vol. 39, No. 7 (1878), 1878, leaf 3
reat Britain in her pro- thumb. To obviate this unequal wear, and to render the ducts, and has actually shipped to China large quantities of penses. heavy cottons termed continental sheetings, but in reality a This was thought a thorough test, since in a thickly cross between a good gray shirting… … render the fibers more compact, and will have about the by the thread guide. The spool, A, is rotated in the usual same difference of effect in boring as a blunt and a sharp way by frictional contact with a rotating drum, B; the ends edged ax do in cutting. Every carpenter knows the differ- glove…

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